The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2020
Filed:
Dec. 19, 2017
Qorvo Us, Inc., Greensboro, NC (US);
Gaurav Singh, Eindhoven, NL;
Qorvo US, Inc., Greensboro, NC (US);
Abstract
Voltage regulators with fast transient response are provided herein. According to one aspect, a voltage regulator for accepting an input voltage (V) and producing an output voltage (V) includes an operational amplifier having as a first input (V) and having as a second input a feedback voltage (VF); an output amplifier having an input coupled to the output of the operational amplifier and an output that produces V, the output being coupled to a feedback path that produces VF; a compensation capacitor (Cc) connected between the output of the output amplifier and an input to a buffer amplifier that supplies a voltage to the input of the output amplifier. The buffer amplifier has a transconductance (gm) that is controlled to be proportional to a load current (I), thereby causing the left hand plane zero of the buffer amplifier to cancel the pole created by the output amplifier.